Finding the Fourth Proportional to 12,706.25, 17,532.96 and 7,328.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,706.25 : 17,532.96 = 7,328.88 : x
2. Step 2: Convert to fraction form
   12,706.25/17,532.96 = 7,328.88/x
3. Step 3: Cross multiply
   12,706.25x = 17,532.96 × 7,328.88
4. Step 4: Simplify right side
   12,706.25x = 128,496,959.88
5. Step 5: Solve for x
   x = 128,496,959.88/12,706.25
6. Step 6: Final answer
   x = 10,112.90